@spencenvickie wrote:
I've never had to pay on my return (lucky enough to always get a refund), do I have to pay it all at once or over time?
You can pay the amount owed in one payment or if you are having difficulty with a single payment then you can request an installment payment using the IRS online payment plan after you have filed the amended return with taxes owed - https://www.irs.gov/payments/online-payment-agreement-application
